There are now, by recent tally, 7 billion people on planet Earth and at least 2 billion of us are hungry. Malnutrition, either from lack of food or too much of the wrong food is a human tragedy on every level imaginable. By the time they are just two years old, malnourished children are permanently stunted, both in body and mind. Illness defines their lives (diarrhea to diabetes). The spark of potential dims.

At TrackerNews, we have long mulled adding a tagline to our masthead: “One Damn Thing After Another…” But every now and again, we come across stories that gives us hope. The tale of “Greenfreeze” refrigeration technology is one them: a better, more energy efficient answer to cooling and a successful environmental / industry collaboration. Sweet Water Organics, an aquaponics operation in Milwaukee, is another one of our favorites—one we have been following closely for nearly a year and a half. —Ed.

“When we ring the siren, at some point we do bring the ambulance,” says Amy Larkin, director of Greenpeace Solutions, the environmental organization’s lesser-known division that works with industry to find and implement climate-friendlier answers. We recently caught up with Larkin, and her colleague, engineer Claudette Juska, after they taped an Worldview interview here in Chicago. Their focus: F-gases, a.k.a. “the worst greenhouse gases you’ve never heard of.”If you have ever used a refrigerator, flicked on an air-conditioner or strolled the freezer aisle in a grocery store in the U.S., you are guilty-by-unavoidable-association of helping to warm the world through F-gas-driven cooling.It is a very big deal. F-gases account for 17% of the world’s global warming impact, says Larkin. “That’s not annual emissions. That’s cumulative impact.” In other words, they tend to hang around in the atmosphere. The story gets even more jaw-dropping when when you learn that not only are there alternatives, but they been tested and used by hundreds of millions of people in other countries for the last 20 years.What gives?

On deforestation, floods, global commodity markets and food empires; The lessons of medieval monks; Urbanization and ecosystems thinking; Saved by a worm?

Of all the horrifying stories to come out of Pakistan in this long waterlogged summer of raging floods, perhaps the most tragic is why the disaster become a full-blown, future-blighting catastrophe: Deforestation had left the country stripped of almost all its forest cover. Trees that would have soaked up rain and slowed the flow weren’t there to do so. Nor were roots in place to keep land from sliding away.Adding insult to injury, according to Al Jazeera, money from illegal logging near the Afghan border in Malakand found its way into the pockets of the Taliban. And in a literal cascade of bad to worse, the ill-gotten timber, stashed temporarily in ravines, magnified the destructive power of the flood-waters, shredding bridges and roads in the hurtle down river.When the waters eventually recede, an eroded landscape will emerge. Whatever fertility the ground held will have been leached away, much of it to end up as mucky silt, clogging Pakistan’s over-extended, under-maintained massive irrigation network.

AtTrackerNews, we tell stories by collecting and connecting links. Unlike most aggregators that are driven by by dateline or popularity, we are interested in context, mixing news stories and research papers, conference videos and book sites, archived articles and blog posts from the field. Typically, between 4 and 6 story groups about health (human / animal / eco), humanitarian work and technology are on the site at any given time, setting the stage for the alchemy of cross-disciplinary insight. Eventually, everything ends up in a searchable database. Day by day, link by link, a broadly defined beat becomes a richer archive, a deeper resource.

Very occasionally, major breaking news stories—a hurricane, disease outbreak, political unrest, climate conference—have taken over the entire site. But the Haitian earthquake stands apart with its mix of staggering devastation, technological hope, massive global response, cascading threats (disease, looting, hurricanes), ecological horror (the fertile skin of the land has literally been stripped bare from deforestation) and the glimmering potential to right more than three centuries of unspeakable wrongs rooted in the slave trade.

For two weeks, dozens upon dozens of Haiti-related links have coursed through the TrackerNews columns. More have been tweeted via @TrackerNews. Now we have created a special permanent TrackerNews: Haitiresources page. (Ed. Note: the site was taken down after the TrackerNews Project wrapped)

The Haiti Special Resources page was created with a prototype customaggregation tool.

If no other statistic about climate change gives you pause, this one should: 1/4 of the world’s population—an estimated 1.4 billion people—rely on water from rivers that source in the Himalayas. As glaciers retreat, snow packs shrink and spring thaws occur earlier and earlier, the precious gift of a well-timed water supply is disappearing before our eyes. Instead, flooding torrents race down mountain streams too early in the spring for crops to use, followed by months of drought when the flows of once reliably mighty rivers slow to a trickle. If that weren’t misery enough, alpine lakes swollen from glacial melt threaten to break their banks, unleashing “Nepali tsunamis” officially called “GLOFs” (Glacial Lake Outburst Floods) that threaten to drown villages and fields and scour away topsoil.Women, who do most of the water-fetching and firewood-gathering, are forced to walk further and further for essentials each day. Crop failures mean hunger and malnutrition.Temperatures, like a seasoned sherpa hiking up Mount Everest, climb fast at higher elevations—as much as 8 times faster in the Himalayas than elsewhere on the planet over the last three decades. With warmer weather comes a raft of vector-borne diseases for which these cold-adapted communities have no defense.Weak, sick, hungry, thirsty. So much for Shangri-La.

“Sustainable” isn’t sustainable. It isn’t even achievable, according to several researchers presenting at the annual meeting of the American Association for the Advancement of Science. Global carbon emissions have accelerated so dramatically over the last eight years, we are “now outside the entire envelope of possibilities” reviewed by the IPCC. Sure enough, sea levels are rising and rising faster than predicted. Meanwhile, biofuels, the great green hope of so many, have only made things worse, leading to a increase in slash & burn farming in the tropics. Indeed, we could find ourselves “effectively burning rain forests in our gas tanks,” noted one scientist.TrackerNews has been full of stories over the last few months painting the same grim picture: